High-voltage charging control method, power supply controller and power supply unit

A technology of power supply and power controller, which is applied in the direction of battery circuit devices, electrical components, circuit devices, etc., and can solve the problems of too low and unable to drive power switches, etc.

Active Publication Date: 2018-11-13
WELTREND SEMICON INC
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Assuming output voltage V OUT An operating voltage of 20 volts corresponds to V DD is 30 volts, then when the output voltage V OUT is 5 volts, the operating voltage V DD will be left with 7.5 volts which will likely be too low to drive an external power switch

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • High-voltage charging control method, power supply controller and power supply unit
  • High-voltage charging control method, power supply controller and power supply unit
  • High-voltage charging control method, power supply controller and power supply unit

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0097] The following embodiments of the present invention take a USB charger as an example to illustrate the present invention, but the present invention is not limited thereto. Embodiments of the present invention can be other types of switching mode power supplies. The embodiments disclosed in this specification are not intended to limit the scope of the present invention.

[0098] A USB charger implemented according to the present invention can make the operating voltage V DD remain within a safe usable range high enough not to harm a power supply controller, regardless of the output voltage V OUT Is 5V or 20V. Therefore, in comparison, the cost of a USB charger implemented by the present invention may be relatively low.

[0099] In one embodiment of the present invention, when the output voltage V OUT When it is 20V, the induction voltage V of the auxiliary winding AUX AUX Designed for 30V, operating voltage V DD Also 30V, completely rectified by the induced voltage ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

Embodiments of the invention provide a high-voltage charging control method, power supply controller and power supply unit. The high-voltage charging control method is suitable for a power supply unit, the power supply unit contains a power switch and a high-voltage-tolerant switch, the high-voltage-tolerant switch is connected between a rectified line voltage and an operating voltage, the rectified line voltage is generated by rectifying a commercial power AC, the power supply unit can output an output voltage to supply power to a load, and the high-voltage charging control method includes the following steps: providing a pulse width modulation signal to the power switch to perform power conversion and control the output voltage; and turning on the high-voltage-tolerant switch to performhigh-voltage charging while performing the power conversion, wherein the high-voltage charging can direct a charging current from the rectified line voltage to charge the operating voltage.

Description

technical field [0001] The present invention relates to a switching power supply, and more particularly to a method and a related device for maintaining an operating voltage of a switching power supply by high-voltage charging. Background technique [0002] The Universal Serial Bus (USB) is one of the most widely used transmission interfaces in the daily life of ordinary modern people. In addition to providing convenient, fast and reliable data transmission, USB also has a very convenient function, that is, power transmission through the interface connection, so-called charging. [0003] In order to popularize the application of USB in power supply of different devices and reduce the configuration of power lines, the USB Developers Forum (Implementers Forum, IF) recently announced the power delivery specification of USB Power Delivery (PD), which aims to pass With a power transmission capacity of up to 100 watts, various devices can meet the power supply requirements throug...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): H02M1/16H02M3/28H02M7/12
CPCH02M1/16H02M3/28H02M7/12H02J7/02H02M1/0003H02M1/32H02M7/06H02M3/33523H02J2207/20H02J7/00H02M1/0006H02M1/007H02M1/08
Inventor 陈俊德沈逸伦陈仁义
Owner WELTREND SEMICON INC
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap